Horizons lacking both organic matter and clay illuviation are more likely to have ________ structure.
Answer: pla...
B horizons are more likely to have _______ structure.
B horizons are more likely to have _______ structure.
Answer: prismat...
Compared to an uncultivated soil, as one cultivates a soil, the organic matter level:
Compared to an uncultivated soil, as one cultivates a soil, the organic matter level:
Answer: decreas...
A horizons are more likely to have _____ structure.
A horizons are more likely to have _____ structure.
Answer: granul...
The space between peds is most important for:
The space between peds is most important for:
Answer: drainage of excess wat...
E horizons are more likely to have _______ structure.
E horizons are more likely to have _______ structure.
Answer: pla...
Blocky structure is:
Blocky structure is:
Answer: cubic...
Horizons rich in illuviated clay are more likely to have _____________ structure.
Horizons rich in illuviated clay are more likely to have _____________ structure.
Answer: blocky or prismat...
Prismatic structure is:
Prismatic structure is:
Answer: ta...
B horizons are more likely to have _______ structure.
B horizons are more likely to have _______ structure.
Answer: bloc...
A unit of non-structure in which there is no bonding between adjacent particles is called:
A unit of non-structure in which there is no bonding between adjacent particles is called:
Answer: single grain...
The space between peds is most important for:
The space between peds is most important for:
Answer: root grow...
Within a ped, granular structure is most important for:
Within a ped, granular structure is most important for:
Answer: storage of wat...
Platy structure is:
Platy structure is:
Answer: wi...
Sandy soils tend to have bulk densities that are___________ than ideal sandy soil densities.
Sandy soils tend to have bulk densities that are___________ than ideal sandy soil densities.
Answer: low...
Corn production is usually highest on:
Corn production is usually highest on:
Answer: loa...
Sandy soils generally benefit from some ___
Sandy soils generally benefit from some ___
Answer: compacti...
Clayey soils tend to have bulk densities that are______ than ideal clayey soil densities.
Clayey soils tend to have bulk densities that are______ than ideal clayey soil densities.
Answer: high...
Potato production is usually highest on:
Potato production is usually highest on:
Answer: sandy loa...
Clayey soils generally benefit from some ______.
Clayey soils generally benefit from some ______.
Answer: fluffi...
A soil that forms a fair ribbon:
A soil that forms a fair ribbon:
Answer: clay lo...
A clay loam:
A clay loam:
Answer: contains approximately 1/3 sand, 1/3 silt, and 1/3 clay by weig...
A soil that forms no ribbon and also feels gritty
A soil that forms no ribbon and also feels gritty
Answer: sandy lo...
A soil that forms a fair ribbon and also feels smooth
A soil that forms a fair ribbon and also feels smooth
Answer: silty clay lo...
A soil that forms no ribbon:
A soil that forms no ribbon:
Answer: lo...
Which of the following textural classes is most likely to have soils with the slowest permeability?
Which of the following textural classes is most likely to have soils with the slowest permeability?
Answer: clay lo...
Which of the following textural classes is most likely to have soils with the most aeration?
Which of the following textural classes is most likely to have soils with the most aeration?
Answer: sandy lo...
Which of the following textural classes is most likely to have soils with the highest potential nutrient holding capacity?
Which of the following textural classes is most likely to have soils with the highest potential nutrient holding capacity?
Answer: cl...
Which of the following textural classes is most likely to have soils with the lowest water holding capacity?
Which of the following textural classes is most likely to have soils with the lowest water holding capacity?
Answer: sa...
As the silt settles out in a Bouyoucos hydrometer texture determination, the hydrometer will ______
As the silt settles out in a Bouyoucos hydrometer texture determination, the hydrometer will ______
Answer: si...
Which of the following textural classes is most likely to have soils with the slowest permeability?
Which of the following textural classes is most likely to have soils with the slowest permeability?
Answer: silty clam lo...
Which of the following textural classes is most likely to have soils with the highest available water holding capacity?
Which of the following textural classes is most likely to have soils with the highest available water holding capacity?
Answer: silty clay lo...
Which of the following textural classes is most likely to have soils with the highest total water holding capacity?
Which of the following textural classes is most likely to have soils with the highest total water holding capacity?
Answer: cl...
Which of the following textural classes is most likely to have soils with the best aeration?
Which of the following textural classes is most likely to have soils with the best aeration?
Answer: sa...
Which of the following textural classes is most likely to have soils with the best balance of soil properties?
Which of the following textural classes is most likely to have soils with the best balance of soil properties?
Answer: lo...
Which of the following textural classes is most likely to have soils with the highest total water holding capacity?
Which of the following textural classes is most likely to have soils with the highest total water holding capacity?
Answer: clay lo...
Which of the following textural classes is most likely to have soils with the slowest permeability?
Which of the following textural classes is most likely to have soils with the slowest permeability?
Answer: cl...
Which of the following textural classes is most likely to have soils with the poorest aeration?
Which of the following textural classes is most likely to have soils with the poorest aeration?
Answer: silty clay lo...
When using Stokes' Law in a textural analysis, we assume all particles are spheres. This is a poor assumption for _____ sized particles.
When using Stokes' Law in a textural analysis, we assume all particles are spheres. This is a poor assumption for _____ sized particles.
Answer: ...
When using Stokes' Law in a textural analysis, we assume all particles are ___.
When using Stokes' Law in a textural analysis, we assume all particles are ___.
Answer: spher...
When using a Bouyoucos Hydrometer, the 40 second reading tells us the amount of __________ still in solution.
When using a Bouyoucos Hydrometer, the 40 second reading tells us the amount of __________ still in solution.
Answer: silt and clay
...
When using Stokes' Law, we assume the particle density is __________ g/cm.
When using Stokes' Law, we assume the particle density is __________ g/cm.
Answer: 2....
When using a Bouyoucos Hydrometer, all of the silt has dropped below the zone of measurement by __________
When using a Bouyoucos Hydrometer, all of the silt has dropped below the zone of measurement by __________
Answer: 2 hou...
When using Stokes' Law to determine soil texture, all of the following are assumed to be constant except:
When using Stokes' Law to determine soil texture, all of the following are assumed to be constant except:
Answer: radius of the particl...
When using a Bouyoucos Hydrometer, the 2 hour reading tells us the amount of __________ still in solution.
When using a Bouyoucos Hydrometer, the 2 hour reading tells us the amount of __________ still in solution.
Answer: cl...
When using a Bouyoucos Hydrometer, all of the sand has dropped below the zone of measurement after __________.
When using a Bouyoucos Hydrometer, all of the sand has dropped below the zone of measurement after __________.
Answer: 40 secon...
Once the volume of coarse fragments reaches ___%, the soil is unusable for cultivated crops.
Once the volume of coarse fragments reaches ___%, the soil is unusable for cultivated crops.
Answer: ...
The middle sized soil particle in textural class analysis is:
The middle sized soil particle in textural class analysis is:
Answer: si...
When we determine soil texture we ignore:
When we determine soil texture we ignore:
Answer: coarse fragments and organic matt...
The largest soil particle in a textural class analysis is:
The largest soil particle in a textural class analysis is:
Answer: sa...
The arrangement of soil particles in space:
The arrangement of soil particles in space:
Answer: soil structu...
Coarse fragments are ignored in the textural class name if they occupy less than ____________ of soil volume.
Coarse fragments are ignored in the textural class name if they occupy less than ____________ of soil volume.
Answer: 1...
The percent distribution of sand, silt, and clay in the soil:
The percent distribution of sand, silt, and clay in the soil:
Answer: soil textu...
The smallest soil particle in a textural class analysis is:
The smallest soil particle in a textural class analysis is:
Answer: cl...
Which of the following has the lowest bulk density?
Which of the following has the lowest bulk density?
Answer: organic matt...
If coarse fragments occupy between ___ and ___ percent of the soil volume they interfere with tillage and reduce yield but do not prevent the use of the soil for cultivated crops.
If coarse fragments occupy between ___ and ___ percent of the soil volume they interfere with tillage and reduce yield but do not prevent the use of...
A unit of soil structure
A unit of soil structure
Answer: p...
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